Stalactites and stalagmites are geological formations that occur when water dissolves limestone and other minerals. The mineral-rich water seeps through cracks and into a cave. In...
Andesite is a type of rock that is thought to form on the edge of tectonic plates in a subduction zone. The subduction zone is where...
Estuaries have a life cycle. They form, they age as they infill with sediment and they transform to other environments, such as freshwater marshes. They are...
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